Your comment is pretty reasonable but I don’t think you’re misinterpreting the criticism of Biden here. The US is and has been supplying Israel with virtually unlimited arms and support for decades now. This support has come with very few strings attached. Biden could easily make aid contingent on many of the things you mention, and it would put the Israeli government in a real bind, forcing them to make concessions that their right wing doesn’t want to make. Biden isn’t being blamed for the whole conflict, and isn’t expected to fix it on his own. But he’s got a lot of leverage that he refuses to use in the interests of peace. This same problem recurs with basically every president, as AIPAC’s influence on the American government is substantial.